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Fluctuation Phenomena in Superconductors

The first five sections deals with the direct fluctuation pair contributions. The indirect fluctuation effects are discussed in the last two sections, devoted to the microscopic justification of the time dependent Ginzburg-Landau equation, the description of the microscopic theory of fluctuations, and discussion of their manifestations in various physical properties of superconductors.

Author(s): Anatoly Larkin and Andrei Varlamov

126 Pages

These lectures are an introduction to those superconductors, all discovered since the 1970s, which do not appear to be well described by the traditional BCS theory. Topics covered includes: Reminders of the BCS theory, Superfluid 3 He: basic description, Definition and diagnostics of exotic superconductivity, Non-cuprate exotic superconductivity, Cuprates: generalities, and normal state properties, Exotic superconductivity.

Author(s): Anthony J. Leggett

158 Pages

Introduction to The Theory of Superconductivity (PDF 82P)

This note covers the following topics: introduction, superconducting transition, the london model, meissner effect, phase coherence , magnetic flux quantization , coherence length and the energy gap , critical currents and magnetic fields , condensation energy, critical currents , quantized vortices, basic concepts, vortices in the london model , critical fields in typeii superconductors , the bcs theory, landau fermiliquid , the cooper problem , the bcs model , the bogoliubovde gennes equations , the selfconsistency equation , observables , energy spectrum and coherence factors, density of states , the energy gap, current , andreev reflection, weak links, josephson effect , dc and ac josephson effects, superconducting quantum interference devices , dynamics of josephson junctions, , resistively shunted josephson junction , the role of capacitance, thermal fluctuations, shapiro steps , coulomb blockade in normal double junctions, orthodox description of the coulomb blockade, low temperature limit , conductance in the high temperature limit, quantum phenomena in josephson junctions, quantization, quantum conditions, charge operator , the hamiltonian , macroscopic quantum tunnelling, effects of dissipation on mqt, band structure , blochs theorem , blochs theorem in josephson devices , large coulomb energy freephase limit, low coulomb energy tight binding limit , coulomb blockade, equation of motion , bloch oscillations and the coulomb blockade in josephson, junctions , effect of dissipation, parity effects

Author(s): N. B. Kopnin, Helsinki University of Technology

82 Pages

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Fluctuation Phenomena in Superconductors

Fluctuation Phenomena in Superconductors

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